Southwest Airlines flight WN 3644: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:25 Phoenix Sky Harbor (PHX) 4 09:40 Austin (AUS)
WN 3644 Non-stop Boeing 737-700 (73W) 2:15 Effective 2025-08-07 through 2025-09-29
Sun 06:00 Love Field, Dallas (DAL) 1 07:45 Saint Louis (STL) 2
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2025-08-10 through 2025-08-24
Sun 06:00 Love Field, Dallas (DAL) 1 07:45 Saint Louis (STL) 2
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:45 Effective 2025-09-07 through 2025-09-28
Tue,Wed 06:25 Phoenix Sky Harbor (PHX) 4 10:40 Austin (AUS)
WN 3644 Non-stop Boeing 737-700 (73W) 2:15 Effective 2025-08-05 through 2025-10-01
Sun 09:10 Oakland (OAK) 2 11:10 Phoenix Sky Harbor (PHX) 4
WN 3644 Non-stop Boeing 737-800 (73H) 2:00 Effective 2025-06-08 through 2025-08-03
Mon,Thu,Fri 10:15 Austin (AUS) 11:20 Harlingen (HRL)
WN 3644 Non-stop Boeing 737-700 (73W) 1:05 Effective 2025-08-07 through 2025-09-29
Mon,Thu,Fri 10:45 Oakland (OAK) 2 12:45 Phoenix Sky Harbor (PHX) 4
WN 3644 Non-stop Boeing 737-800 (73H) 2:00 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 10:45 Oakland (OAK) 2 12:45 Phoenix Sky Harbor (PHX) 4
WN 3644 Non-stop Boeing 737-800 (73H) 2:00 Effective 2025-07-07 through 2025-08-04
Fri 11:00 Oakland (OAK) 2 13:00 Phoenix Sky Harbor (PHX) 4
WN 3644 Non-stop Boeing 737-800 (73H) 2:00 Operates only on 2025-07-04
Sat 11:00 Houston Hobby (HOU) 14:30 Miami (MIA)
WN 3644 Non-stop Boeing 737-800 (73H) 2:30 Effective 2025-08-09 through 2025-09-27
Sat 11:10 Oakland (OAK) 2 13:05 Phoenix Sky Harbor (PHX) 4
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:55 Effective 2025-06-07 through 2025-08-02
Sun 13:25 San Jose (SJC) B 14:45 Los Angeles (LAX) 1
WN 3644 Non-stop Boeing 737-800 (73H) 1:20 Operates only on 2025-08-31
Sun 14:10 Orlando (MCO) 14:50 Birmingham (BHM)
WN 3644 Non-stop Boeing 737-700 (73W) 1:40 Operates only on 2025-05-25
Sat 14:40 Denver (DEN) 15:25 Colorado Springs (COS)
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 0:45 Effective 2025-11-08 through 2025-11-15
Sat 14:40 Denver (DEN) 15:25 Colorado Springs (COS)
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 0:45 Effective 2025-12-06 through 2025-12-13
Sun 15:25 Birmingham (BHM) 17:20 Love Field, Dallas (DAL) 1
WN 3644 Non-stop Boeing 737-700 (73W) 1:55 Operates only on 2025-05-25
Sun 17:55 Love Field, Dallas (DAL) 1 19:10 Ontario, Los Angeles (ONT) 4
WN 3644 Non-stop Boeing 737-700 (73W) 3:15 Operates only on 2025-05-25
Tue,Wed 18:00 Ontario, Los Angeles (ONT) 4 19:20 Oakland (OAK) 2
WN 3644 Non-stop Boeing 737-800 (73H) 1:20 Valid until 2025-06-04
Sat 18:15 Ontario, Los Angeles (ONT) 4 19:35 Oakland (OAK) 2
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Valid until 2025-05-31
Mon,Thu,Fri 18:20 Ontario, Los Angeles (ONT) 4 19:40 Oakland (OAK) 2
WN 3644 Non-stop Boeing 737-800 (73H) 1:20 Valid until 2025-06-02
Sun 19:00 Ontario, Los Angeles (ONT) 4 20:15 Oakland (OAK) 2
WN 3644 Non-stop Boeing 737-800 (73H) 1:15 Valid until 2025-05-18
Sun 19:00 Ontario, Los Angeles (ONT) 4 20:15 Oakland (OAK) 2
WN 3644 Non-stop Boeing 737-800 (73H) 1:15 Operates only on 2025-06-01
Sun 19:45 Ontario, Los Angeles (ONT) 4 21:05 Oakland (OAK) 2
WN 3644 Non-stop Boeing 737-700 (73W) 1:20 Operates only on 2025-05-25
Mon,Thu,Fri 19:50 Kansas City (MCI) 21:10 Midway, Chicago (MDW)
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2025-10-02 through 2025-10-31
Mon-Wed 20:30 Austin (AUS) 22:25 Sacramento (SMF) B
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 20:30 Austin (AUS) 22:25 Sacramento (SMF) B
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Effective 2025-12-19 through 2026-01-04
Tue,Wed 20:45 Midway, Chicago (MDW) 23:05 Pittsburgh (PIT)
WN 3644 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-10-07 through 2025-10-29
Mon,Thu,Fri 21:55 Midway, Chicago (MDW) 00:15 Pittsburgh (PIT)
WN 3644 Non-stop Boeing 737 MAX 8 (7M8) 1:20 Effective 2025-10-02 through 2025-10-31
The flight arrives 1 day after departure.
Sun 22:20 Baltimore (BWI) 23:30 Birmingham (BHM)
WN 3644 Non-stop Boeing 737-800 (73H) 2:10 Operates only on 2025-11-30
Sat 22:25 Austin (AUS) 00:20 Sacramento (SMF) B
WN 3644 Non-stop Boeing 737-800 (73H) 3:55 Effective 2025-11-22 through 2025-11-29
The flight arrives 1 day after departure.
Sat 22:25 Austin (AUS) 00:20 Sacramento (SMF) B
WN 3644 Non-stop Boeing 737-800 (73H) 3:55 Effective 2025-12-20 through 2026-01-03
The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 05:25 Phoenix Sky Harbor (PHX) 4 11:20 Harlingen (HRL)
WN 3644 1-stop Boeing 737-700 (73W) 3:55 Effective 2025-08-07 through 2025-09-29
Sun 14:10 Orlando (MCO) 17:20 Love Field, Dallas (DAL) 1
WN 3644 1-stop Boeing 737-700 (73W) 4:10 Operates only on 2025-05-25
Sun 15:25 Birmingham (BHM) 19:10 Ontario, Los Angeles (ONT) 4
WN 3644 1-stop Boeing 737-700 (73W) 5:45 Operates only on 2025-05-25
Sun 17:55 Love Field, Dallas (DAL) 1 21:05 Oakland (OAK) 2
WN 3644 1-stop Boeing 737-700 (73W) 5:10 Operates only on 2025-05-25
Mon,Thu,Fri 19:50 Kansas City (MCI) 00:15 Pittsburgh (PIT)
WN 3644 1-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2025-10-02 through 2025-10-31
The flight arrives 1 day after departure.
Sun 14:10 Orlando (MCO) 19:10 Ontario, Los Angeles (ONT) 4
WN 3644 2-stop Boeing 737-700 (73W) 8:00 Operates only on 2025-05-25
Sun 15:25 Birmingham (BHM) 21:05 Oakland (OAK) 2
WN 3644 2-stop Boeing 737-700 (73W) 7:40 Operates only on 2025-05-25
Sun 14:10 Orlando (MCO) 21:05 Oakland (OAK) 2
WN 3644 3-stop Boeing 737-700 (73W) 9:55 Operates only on 2025-05-25
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3644: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3644
05:25
Phoenix Sky Harbor (PHX) 4

09:40
Austin (AUS)
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
06:00
Love Field, Dallas (DAL) 1

07:45
Saint Louis (STL) 2
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
06:00
Love Field, Dallas (DAL) 1

07:45
Saint Louis (STL) 2
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
06:25
Phoenix Sky Harbor (PHX) 4

10:40
Austin (AUS)
Effective 2025-08-05 through 2025-10-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
09:10
Oakland (OAK) 2

11:10
Phoenix Sky Harbor (PHX) 4
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
10:15
Austin (AUS)

11:20
Harlingen (HRL)
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:05, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
10:45
Oakland (OAK) 2

12:45
Phoenix Sky Harbor (PHX) 4
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
10:45
Oakland (OAK) 2

12:45
Phoenix Sky Harbor (PHX) 4
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
11:00
Oakland (OAK) 2

13:00
Phoenix Sky Harbor (PHX) 4
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
11:00
Houston Hobby (HOU)

14:30
Miami (MIA)
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:30, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
11:10
Oakland (OAK) 2

13:05
Phoenix Sky Harbor (PHX) 4
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
13:25
San Jose (SJC) B

14:45
Los Angeles (LAX) 1
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
14:10
Orlando (MCO)

14:50
Birmingham (BHM)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:40, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
14:40
Denver (DEN)

15:25
Colorado Springs (COS)
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 0:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
14:40
Denver (DEN)

15:25
Colorado Springs (COS)
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 0:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
15:25
Birmingham (BHM)

17:20
Love Field, Dallas (DAL) 1
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
17:55
Love Field, Dallas (DAL) 1

19:10
Ontario, Los Angeles (ONT) 4
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
18:00
Ontario, Los Angeles (ONT) 4

19:20
Oakland (OAK) 2
Valid until 2025-06-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
18:15
Ontario, Los Angeles (ONT) 4

19:35
Oakland (OAK) 2
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
18:20
Ontario, Los Angeles (ONT) 4

19:40
Oakland (OAK) 2
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
19:00
Ontario, Los Angeles (ONT) 4

20:15
Oakland (OAK) 2
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
19:00
Ontario, Los Angeles (ONT) 4

20:15
Oakland (OAK) 2
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
19:45
Ontario, Los Angeles (ONT) 4

21:05
Oakland (OAK) 2
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:20, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
19:50
Kansas City (MCI)

21:10
Midway, Chicago (MDW)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
20:30
Austin (AUS)

22:25
Sacramento (SMF) B
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
20:30
Austin (AUS)

22:25
Sacramento (SMF) B
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3644
20:45
Midway, Chicago (MDW)

23:05
Pittsburgh (PIT)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3644
21:55
Midway, Chicago (MDW)

00:15(+1)
Pittsburgh (PIT)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Southwest Airlines WN3644
22:20
Baltimore (BWI)

23:30
Birmingham (BHM)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3644
22:25
Austin (AUS)

00:20(+1)
Sacramento (SMF) B
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:55, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Southwest Airlines WN3644
22:25
Austin (AUS)

00:20(+1)
Sacramento (SMF) B
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:55, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Non-Direct Flights:
Southwest Airlines WN3644
05:25
Phoenix Sky Harbor (PHX) 4

11:20
Harlingen (HRL)
Effective 2025-08-07 through 2025-09-29
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:55, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
14:10
Orlando (MCO)

17:20
Love Field, Dallas (DAL) 1
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:10, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
15:25
Birmingham (BHM)

19:10
Ontario, Los Angeles (ONT) 4
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:45, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
17:55
Love Field, Dallas (DAL) 1

21:05
Oakland (OAK) 2
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:10, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
19:50
Kansas City (MCI)

00:15(+1)
Pittsburgh (PIT)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:25, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Southwest Airlines WN3644
14:10
Orlando (MCO)

19:10
Ontario, Los Angeles (ONT) 4
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 8:00, 2-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
15:25
Birmingham (BHM)

21:05
Oakland (OAK) 2
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 7:40, 2-stop
Boeing 737-700 (73W)
Southwest Airlines WN3644
14:10
Orlando (MCO)

21:05
Oakland (OAK) 2
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:55, 3-stop
Boeing 737-700 (73W)
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Harlingen (HRL)
  • Austin (AUS) - Sacramento (SMF)
  • Baltimore (BWI) - Birmingham (BHM)
  • Birmingham (BHM) - Love Field, Dallas (DAL)
  • Birmingham (BHM) - Oakland (OAK)
  • Birmingham (BHM) - Ontario, Los Angeles (ONT)
  • Denver (DEN) - Colorado Springs (COS)
  • Houston Hobby (HOU) - Miami (MIA)
  • Kansas City (MCI) - Midway, Chicago (MDW)
  • Kansas City (MCI) - Pittsburgh (PIT)
  • Love Field, Dallas (DAL) - Oakland (OAK)
  • Love Field, Dallas (DAL) - Ontario, Los Angeles (ONT)
  • Love Field, Dallas (DAL) - Saint Louis (STL)
  • Midway, Chicago (MDW) - Pittsburgh (PIT)
  • Oakland (OAK) - Phoenix Sky Harbor (PHX)
  • Ontario, Los Angeles (ONT) - Oakland (OAK)
  • Orlando (MCO) - Birmingham (BHM)
  • Orlando (MCO) - Love Field, Dallas (DAL)
  • Orlando (MCO) - Oakland (OAK)
  • Orlando (MCO) - Ontario, Los Angeles (ONT)
  • Phoenix Sky Harbor (PHX) - Austin (AUS)
  • Phoenix Sky Harbor (PHX) - Harlingen (HRL)
  • San Jose (SJC) - Los Angeles (LAX)
All Southwest Airlines flights
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